Indicator for radiators.



H. VISSERING.

INDICATOR FOR RADIATORS.

APPLICATION FILED APR.29,1907.

Patented Nov. 17, 1908.

HARRY VISSERING, or cnn'ueo, ILLINOIS.

inmon'ron Eon nanm'rons. f

Specification of Letters Patent.

Patented Nov. 17, 1908.

Appliobltion filed lipril 29, 1907. Serial 1Io. 370,951.

i0, amivnmn it may concern: Bent-known v that I, HARR Vrssnnnvc, a leitizenof the United States, 1' siding at Chi- Q cagoain the: county of Cool" and State of Illinois, haveinyented certai new and usc =ful lmprovements in Indicators for Radiators', ioi which the'following is a specification.-'-

My invention relates to gages or indicators for showing the condition of the water depths vradiators commonly employed for cooling the water circulated about the cylinders of explosive engines, as employed in motor vehicles. The invention has for its objects; to provide a gage or indicator of greater reliability than the gages heretofore employed; to provide agage which will not freeze, and finally, to provide a gage which canbe utilized as a filling tube. Onecm bodnnentof the invention is illustrated in the accompanying drawings, wherein,

' Figure l is a longitudinal section throu h the hood.ofjanlautomobile, and shows t e relation of improved indicator and the radiator to-theen me and other parts of the mechanism therewith,

FigureQ-ifs aentical section through the radiator showing ithe indicator or gage in n s elevation,

Jae

igure 3 is a sect onal front view showing op of'the radiator with the indicator g hereon,and

'Fi'gu'r 'f is an enlarged longitudinal section through the indicator. s 7

Heretbfore 'gages for indicating the height of waterin cooling radiators have been the si placed alon its" water gages employed on an manner as t ordinary boiler. This old form 01 gage-has been found": unreliable and unsatisfactory for the reasomthat the ga e is often frozen up old weather, is iable to become p uggedixp b'y' fiirt thus preventing the from indicating the true height of the water in'the radiators, and steam is often pocketed in. the gage causing the level of the water to be incorrectly indicated. My invention is designed to overcome these objections and this is accomplished by placing the gage or indicator at a point where it is exposed to water of the highest temperature in the radiator so that it will not freeze, and in using a tube which has no crooks or bends to collect dirt. The indicator also acts on a'different principle from the former type of radiator 1,

thereof in the same cate the height oi water in the radiator by means of vapor or bubbles raised by the high temperature. lii'icliy stated, the gage comprises an upright tube provided with a window and mounted on the top of the rinliator. The tube is provided at its top with a removable cap whereby it may be utilized for replenishing the water in the radiator when desired.

Referring first to Figure 1 of the drawing, 1 is the cooling radiator mounted at the front of the hood 2, ii is my improved indicator carried upon the top of the radiator 1, 4 are the cylinders of the explosive engine, which are to becooled by water from the 5 is the ordinary centrifugal pump for circulating the water continuously through the radiator and cylinder casings, 6 is the outlet pipe from the bottom of the radiator to the pump 5, 7 is the pipe leading from the pump 5 to the cylinder casings, and 8 are the return pipes to the top of the radiator. The radiator is of the ordinary type as indicated in Figures 2 and 3, and consists of the upper and lower headers connected by a series of small pipes provided with cooling fins. The indicator 3 is shown in cross section in Figure at, and comprises a tube portion 9 screw threaded at its lower end to the collar 10,, and carrying at its upper end the cap 11. The side of the tube 9 is cut away as shown, to expose the glass 12, which glass'lZ consists of a tube fitting tightly inside the tube 9 and provided with the. askets l3 and let. The cap 11 is provide at its top with a small vent 15 for relieving any pressure which may accumulate in the radiator due to the high temperature of the water.

When the radiator is first filled and the water extends up inside the indicator 3, the height thereof can be seen tl'ir'ough the gage glass 12, but the gage is further useful in that it indicates when the water has reached such a low level as to give rise to a dangerous condition, which condition is indicated by the formation of vapor or bubbles of steam, which vapor or bubbles rise inside of the gage glass and may be observed by the operator. It will be seen therefore, that whenever the water in the radiator reaches a dangerously low level this fact is indicated with certainty in the gage. It will also be apparent that as thetube is a straight one and is placed at the extreme top of the radiator, there is no danger of steam Dfinlrn simply removing the cap 11, and filling the radiator throu h the tube. As the 's e is g D intended also to indicate the condition of the i water by means of vapor or bubbles as Well as by means of the water line, as shown in the glass, at very short gage tube may be used, thus rendering the device very cheap as compared with the ordinary gage glasses,

- which must be extended along a considerable distanceat the side of the radiator.

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is the following. I

1. The combmutlon with a water cooling radiator, of an indicator mounted thereon and comprising an upright tube communicating et-its lower end with the top of the rediator and provided at its side with a win dOW.

The combination with a water cooling radiator, of an indicator mounted thereon eating at its lower end with the top of the radiator-and provided at the. side with a window end-having a removable cap where-' by the tube may constitute a filling passage.

3. The combination with a. water Gobljng radiator, of an indicator mounted thereon'' and comprising an upright tube-communieating at its lower end with the'top of the radiator and provided at the side with a window and having a removable cap' provided with'a small vent. A

' 4; The combination with awater cooling 4 radiator, of an indicator seated on the top thereof, and comprising a short uprighttube provided with a window and adapted to indicate the condition of the water in the radiatgr. by the formation of bubbles in the said tu e. y

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses;

' HARRY vIssERr'Ne. Witnesses:

PAUL CAnrENTER, JAME -NICHOLAS LORENZ. 

